* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
:root {
  --primary-color: #22254b;
  --secondary-color: #373b69;
  --white-color: #f9f9f9;
  --placeholder-color: #7378c5;
}
html {
  font-size: 20px;
}
body {
  background-color: var(--primary-color);
  font-family: sans-serif;
}
header {
  padding: 1rem;
  display: flex;
  justify-content: flex-start;
  align-items: center;
  background-color: var(--secondary-color);
}
header .search {
  background-color: transparent;
  border: 2px solid var(--primary-color);
  border-radius: 50px;
  font-family: inherit;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  color: var(--white-color);
}
header .search:placeholder {
  color: var(--placeholder-color);
}
header .search:focus {
  outline: 1px solid #f00;
  background-color: var(--primary-color);
}
main {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
}
main .col {
  width: 300px;
  height: 200px;
}
